PN 34CrMo4 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: Poland / PN

Data updates

Latest Update: 2024-12
Total number of updates: 10
Update History

This material has 1514 properties — only a subset is shown here.

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PN 34CrMo4 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.30 – 0.37
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.90 – 1.20
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.60 – 0.90
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

EN 10083-1: 1991 / Quenched and tempered steels - Part 1: Technical delivery conditions for special steels (includes amendment A1:1996)

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PN 34CrMo4 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Shear Modulus
val1
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GPa
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Density
val1
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kg/dm³
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Poisson Coefficient
val1
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Thermal Conductivity
42 W/(m∙°C)
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Heat Capacity
val1
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J/(kg∙°C)
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Electrical Resistivity
0.18 Ω∙mm²/m
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Electrical Conductivity
val1
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S/m
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This material has 1514 properties — only a subset is shown here.

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PN 34CrMo4 Heat Treatments

  • Annealed (+A): 650-720°C Normalized (+N): 850-890°C Austenitized: 830-870°C Tempered: 540-680°C
  • Annealing at 680-720°C; Normalizing at 850-890°C; Hardening in polymer or water at 840-870°C (the samples can be quenched qualifying it from any polymer, provided the cooling rate does not exceed 50% of the rate of cooling in water at 20°C. After remission of cooling air) and in oil at 850-880°C; Tempering for Q+T1 at 550-630°C, for Q+T2 at 560-640°C, for Q+T3 at 570-650°C and for Q+T4 at 580-660°C.

PN 34CrMo4 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
580 MPa
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Elongation, A
8.6 %
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Reduction of Area
val1
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%
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Impact Energy
val1
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J
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Brinell Hardness (HB)
≤ 255
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Rockwell Hardness (HR)
val1
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Vickers Hardness (HV)
val1
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Grain Size
val1
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